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The relationship between parotid and superficial fasciae
G L Zigiotti1, M B Liverani, D Ghibellini
1Istituto di Anatomia Normale, Università di Bologna, Italy.
Surgical and Radiologic Anatomy : SRA
|January 1, 1991
Summary
This study on human fetal tissues reveals no distinct parotid fascia. Instead, a superficial fascial thickening, continuous with the platysma muscle, is observed, impacting anatomical and surgical understanding.
Area of Science:
- Anatomy
- Developmental Biology
Background:
- The existence and nature of the parotid fascia are debated in scientific literature.
- Previous studies present contrasting opinions on this anatomical structure.
Purpose of the Study:
- To investigate the developmental relationship between parotid and superficial fasciae in human fetuses.
- To clarify the anatomical existence of a distinct parotid fascia.
- To reconcile conflicting reports in recent anatomical literature.
Main Methods:
- Analysis of serial sections of human fetal subcutaneous neck and facial tissues (craniocaudal distance 7–30 cm).
- Direct observations on human anatomy.
- Comparison with existing literature, including primate and human studies.
Main Results:
- No evidence of a distinct parotid fascia proper was found.
- A superficial thickening of connective tissue, continuous with the platysma muscle and gland septa, was identified.
- A thin connective layer was noted on the deep surface of this structure.
- Findings align with previous research by Jost.
Conclusions:
- The concept of a distinct parotid fascia should be redefined or abandoned.
- The term "superficial muscular and aponeurotic system (SMAS)" may correspond to the superficial fascia.
- These findings have significant anatomical and surgical implications.